上消化道出血最常见于下列哪种疾病
A．食管静脉曲张破裂
B．急性胃黏膜病变
C．消化性溃疡
D．食管癌
E．壶腹癌
参考答案：C
That's my pen. Please give ____. [ ]
A. me it
B. it to me
C. it for me
D. me for it
After the final exams, I will have a ___________ vacation in Hainan.
A．5 day
B．5-day
C．5 days
D．5-days
